Motivated by cost and future rent rises
So what’s behind the increase in investment activity by end-users? Unsurprisingly, the biggest driver tends to be cost. Many occupiers are taking advantage of a rebasing in property values to acquire their buildings before prices rise, and benefit from a potential upside long-term as capital values recover. They are also hedging against continued rental growth: in many major cities, there is a shortage of prime quality space and a limited development pipeline, so being an owner-occupier removes concerns about rental increases and provides security of tenure. In the words of PG&E itself, when it finalised its purchase in June: “Compared to leasing, purchasing the building is the lower-cost option for PG&E and its customers over the long term. The California Public Utilities Commission, in reviewing the proposed transaction, also concluded that buying the building is more cost-effective than leasing”.
In many cases, end-users are also able to secure lower financing costs than your average real estate investor through acquisition, especially if they borrow at a company, rather than asset, level. Looking at the example of Seoul again; the city has a prevalence of end users happy to take a common equity stake, securing their occupation, while making it easier for asset management companies to raise preferred equity from, principally, domestic-based limited partners. This often means other investors are unable to compete on pricing. 
With several of the factors driving end-user buyers being cyclical, we may see their propensity to buy reduce as the markets continue to recover. Having said that, the structural trend towards lower development levels and a squeezed pipeline of space looks set to continue in many geographies for some time, so this may remain a driving force behind more end-users making the decision to become landlords in the short- to mid-term.